The Popular Science Monthly, Volumen8D. Appleton, 1876 |
Dentro del libro
Resultados 1-5 de 76
Página 26
... side by side in the Silurian seas . They are generated , like plants , by buds and by artificial sections ; like plants , they are able , from a small fragment , to produce the whole organism . They , however , go farther than most ...
... side by side in the Silurian seas . They are generated , like plants , by buds and by artificial sections ; like plants , they are able , from a small fragment , to produce the whole organism . They , however , go farther than most ...
Página 29
... side outward . The cnidæ are barbed filaments inclosed in tiny sacs , which they can shoot out at will , for their own protection , or for the capture of their prey , as the case may be . In the hydra the sac is ejected , and a central ...
... side outward . The cnidæ are barbed filaments inclosed in tiny sacs , which they can shoot out at will , for their own protection , or for the capture of their prey , as the case may be . In the hydra the sac is ejected , and a central ...
Página 31
... side of the leaves or to the stalks of aquatic plants . Its body is extremely contractile , and consists , like the oceanic hydroids , a in its earliest stage of development , of a simple elongated sac , with an opening which answers ...
... side of the leaves or to the stalks of aquatic plants . Its body is extremely contractile , and consists , like the oceanic hydroids , a in its earliest stage of development , of a simple elongated sac , with an opening which answers ...
Página 32
... side by side , upon the bristle . He repeated the experiment and watched the manœuvres of the two . The hydra inside managed to work its way through the small aperture made in the side of its neighbor by the bristle , and soon occupied ...
... side by side , upon the bristle . He repeated the experiment and watched the manœuvres of the two . The hydra inside managed to work its way through the small aperture made in the side of its neighbor by the bristle , and soon occupied ...
Página 47
... side , where there are placed three delicate , hair - like organs , in such order that an insect can hardly traverse it without interfering with one of them , when the two sides suddenly collapse , and inclose the prey , with a force ...
... side , where there are placed three delicate , hair - like organs , in such order that an insect can hardly traverse it without interfering with one of them , when the two sides suddenly collapse , and inclose the prey , with a force ...
Otras ediciones - Ver todas
Términos y frases comunes
action American animal appears become birds body called carbonic carbonic acid cause cells century character Church cilium crime criminal doctrine earth ence England esculine existence experiments fact feet force geological Geschichte des Materialismus give glass Herbert Spencer Honiton human hydroid idea influence inquiry insects investigation kangaroo knowledge labor lace lace-makers larvæ less living Marsangy marsupials matter means ment mental mind mollusks monad natural nitrogen object observations opossum organic original papillæ pass period phenomena physical plants present produced Prof protoplasm question races regard relations religion religious remarkable sand scientific sexes sexual Shott social Society species structure substance surface theory thing thought tion Trinity House truth tube twins Tyndall United universe Valenciennes whole women York
Pasajes populares
Página 136 - ... the passage from the current to the needle, if not demonstrable, is thinkable, and that we entertain no doubt as to the final mechanical solution of the problem. But the passage from the physics of the brain to the corresponding facts of consciousness is unthinkable. Granted that a definite thought, and a definite molecular action in the brain occur simultaneously ; we do not possess the intellectual organ, nor apparently any rudiment of the organ, which would enable us to pass, by a process...
Página 228 - Who coverest thyself with light as with a garment: who stretchest out the heavens like a curtain: Who layeth the beams of his chambers in the waters: who maketh the clouds his chariot: who walketh upon the wings of the wind...
Página 236 - Thus, that the square of the hypothenuse of a right-angled triangle is equal to the sum of the squares of the other two sides, was an experimental discovery, or why did the discoverer sacrifice a hecatomb when he made out its proof ?
Página 566 - All flesh is not the same flesh : but there is one kind of flesh of men, another of beasts, another of fishes, and another of birds. There are also celestial bodies, and bodies terrestrial : but the glory of the celestial is one, and the glory of the terrestrial is another.
Página 136 - I do not think he is entitled to say that his molecular groupings and his molecular motions explain everything. In reality they explain nothing. The utmost he can affirm is the association of two classes of phenomena, of whose real bond of union he is in absolute ignorance.
Página 140 - Emerson. I do so mainly because in him we have a poet and a profoundly religious man, who is really and entirely undaunted by the discoveries of Science, past, present, or prospective. In his case Poetry, with the joy of a bacchanal, takes her graver brother Science by the hand, and cheers him with immortal laughter. By Emerson scientific conceptions are continually transmuted into the finer forms and warmer hues of an ideal world.
Página 362 - Cooke took out their first patent ' for improvements in giving signals and sounding alarms in distant places by means of electric currents transmitted through metallic circuit...
Página 284 - The thing that hath been, it is that which shall be ; and that which is done is that which shall be done : and there is no new thing under the sun. Is there any thing whereof it may be said, See, this is new ? it hath been already of old time, which was before us.
Página 354 - They have had exactly the same nurture from their birth up to the present time; they are both perfectly healthy and strong, yet they are otherwise as dissimilar as two boys could be, physically, mentally, and in their emotional nature.
Página 392 - Not till thirty years after did a friend dare write on his tombstone a memorial of his discovery...